Single page or popup?

Question

User interface

Hello.
I look towards ebay, amazon, boards like drom.ru, etc. So, despite their size, they use separate pages, not popups. This refers to the card (description) of the product.
In terms of reliability, which is better to use a popup or a separate page?

Answer 1

You have listed large aggregators, for them the product is a separate entity with many additional properties, not to mention features such as delivery conditions, reviews, similar/recommended products, information about the seller, and much more. It is quite difficult to fit all this in one pop-up, and given that it should also be displayed on mobile, it is almost unrealistic. If you have a store of whistles that differ only in price, size, color and tone, then you can show them in the pop-up.
PS: Remove irrelevant tags before the moderator comes.